/Engine/Source/Runtime/AnimGraphRuntime/Public/BoneControllers/BoneControllerSolvers.h
Iteratively pulls the character pelvis towards the ground based on the relationship of driven IK foot targets versus FK foot limits.
FTransform Solve ( FTransform PelvisTransform, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const float > FKFootDistancesToPelvis, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const FVector > IKFootLocations, float DeltaTime )